Image knowledge
Practical image guides.
Clear advice grounded in formats, browser capabilities and privacy—not universal quality claims.
How to choose an image format
A practical decision guide for JPEG, PNG, WebP, AVIF, SVG and GIF.
How to compress images for the web
Reduce image weight while protecting dimensions, transparency and perceived quality.
How to remove private photo metadata
Review EXIF and GPS data, then create a clean image copy locally.
A guide to transparent image backgrounds
Understand alpha channels, suitable formats and the limits of automatic background removal.
How to blur faces before sharing a photo
Use local detection, manual review and metadata cleaning for safer image sharing.